公开(公告)号：US20240385079A1

公开(公告)日：2024-11-21

申请号：US18202479

申请日：2023-05-26

Applicant: II-VI Delaware, Inc.

Inventor： Ian Peter McClean ,  Sigfried Fleischer ,  Vincent Ouyang

IPC: G01M11/00

Abstract: A circulator cable configured to couple an optical time domain reflectometer (OTDR) to an optical fiber span under test is provided. The circulator cable includes a bandpass optical filter configured to be coupled to an optical input port of the OTDR; and a directional optical coupling device coupled to the bandpass optical filter and an optical output port of the OTDR and configured to direct propagation of an optical probe signal generated by the OTDR from the optical output port toward the optical fiber span under test and direct reflections attributed to the optical probe signal from the optical fiber span under test into the bandpass pass optical filter.